Type 2 Diabetes Mellitus Clinical Trial
Official title:
A Randomized, Double-blind, Placebo-controlled, Crossover Study to Evaluate the Effects of Sitagliptin on the Kinetics of Triglyceride-rich Lipoproteins Apolipoprotein B48 and Apolipoprotein B100 in Patients With Type 2 Diabetes
Sitagliptin is a potent and selective inhibitor of dipeptidyl peptidase IV (DPP-IV), and has been shown to reduce fasting and postprandial glucose levels in patients with type 2 diabetes mainly through incretin hormone-mediated improvements in islet function [13]. Although clinical studies to date indicate that fasting lipid levels are minimally affected by DPP-IV inhibitor treatment [14-16], animal studies suggested that DPP-IV inhibition reduce intestinal triglycerides (TG) absorption and apolipoprotein (apo) production [17] and increased chylomicron catabolism [18]. Interestingly, a recent study supporting this hypothesis showed that vildagliptin therapy was able to reduce postprandial intestinal triglyceride-rich lipoproteins (TRL) particles in patients with type 2 diabetes [19]. Recently, our group has reported that sitagliptin treatment significantly reduced plasma apo B-48 and TG concentrations in the postprandial state. Moreover, animal studies showed that sitagliptin decreased intestinal secretion of intestinal apo B-48, mainly by increasing level of glucagon-like peptide (GLP)-1 [20]. Therefore, the present study was designed to examine the effects of sitagliptin on the kinetics of TRL apo B-48 and in patients with type 2 diabetes. A possible reduction in postprandial atherogenic TRL apo B-48-containing lipoprotein levels by sitagliptin would add to therapeutic utility of this DPP-4 inhibitor and suggest the potential to reduce cardiovascular risk in patients with type 2 diabetes.
n/a
Allocation: Randomized, Endpoint Classification: Pharmacodynamics Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
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